Effect of TiO 2 addition on the distribution of phosphorus associated with phase separation of borosilicate glasses

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Behavior of phosphorus associated with phase separation and the effect of TiO 2 addition on the phosphorus distribution were investigated in Na 2O-B 2O 3-SiO 2 ternary glass system. After heat treatment, phase separation by spinodal decomposition was commonly observed. In the phase separation of TiO 2-free glasses, phosphorus was preferentially distributed into B 2O 3-rich phase, and after TiO 2 addition, phosphorus distribution into SiO 2-rich phase was also observed. With increasing TiO 2 content, the amount of phosphorus distributed into SiO 2-rich phases increased up to 90%. 31P MAS NMR indicated that phosphorus in the glasses was mainly present in negatively-charged Q 2 units with terminal oxygen atoms, and in the TiO 2-containing glasses, Q 1 or Q 0 units containing P-O-Ti bond were confirmed. Despite the formation of negatively-charged Q 1 or Q 0 units, phosphorus was distributed into SiO 2-rich phase, which was due to the distribution of Ti 4+ ions with higher coordination numbers acting as network modifiers.

Original languageEnglish
Title of host publicationCeramic Transactions
Pages145-149
Number of pages5
Volume231
Publication statusPublished - 2012
Event9th International Conference on Advances in the Fusion and Processing of Glass, AFPG9 and Symposium 15 - Structure, Properties and Photonic Applications of Glasses Held during PACRIM-9 - Cairns, QLD, Australia
Duration: Jul 10 2011Jul 14 2011

Publication series

NameCeramic Transactions
Volume231
ISSN (Print)10421122

Other

Other9th International Conference on Advances in the Fusion and Processing of Glass, AFPG9 and Symposium 15 - Structure, Properties and Photonic Applications of Glasses Held during PACRIM-9
CountryAustralia
CityCairns, QLD
Period7/10/117/14/11

Fingerprint

Borosilicate glass
Phase separation
Phosphorus
Glass
Spinodal decomposition
Heat treatment
Nuclear magnetic resonance
Ions
Oxygen
Atoms

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Ohtsuki, Y., Sakida, S., Benino, Y., & Nanba, T. (2012). Effect of TiO 2 addition on the distribution of phosphorus associated with phase separation of borosilicate glasses. In Ceramic Transactions (Vol. 231, pp. 145-149). (Ceramic Transactions; Vol. 231).

Effect of TiO 2 addition on the distribution of phosphorus associated with phase separation of borosilicate glasses. / Ohtsuki, Y.; Sakida, Shinichi; Benino, Yasuhiko; Nanba, Tokuro.

Ceramic Transactions. Vol. 231 2012. p. 145-149 (Ceramic Transactions; Vol. 231).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ohtsuki, Y, Sakida, S, Benino, Y & Nanba, T 2012, Effect of TiO 2 addition on the distribution of phosphorus associated with phase separation of borosilicate glasses. in Ceramic Transactions. vol. 231, Ceramic Transactions, vol. 231, pp. 145-149, 9th International Conference on Advances in the Fusion and Processing of Glass, AFPG9 and Symposium 15 - Structure, Properties and Photonic Applications of Glasses Held during PACRIM-9, Cairns, QLD, Australia, 7/10/11.
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